A patient is concerned about the visible gray margin of a porcelain-fused-to-metal crown on a molar. Which restorative material choice would best address this esthetic concern while still providing strength?

Zirconia-based all-ceramic crowns avoid the visible gray metal margin characteristic of porcelain-fused-to-metal (PFM) restorations, while still offering high flexural strength suitable for posterior load-bearing teeth — making it a strong esthetic and functional choice for a molar restoration when metal-margin visibility is a concern.